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Chemistry

Chemistry
The percentage of Nitrogen in Air is

0.03
85.02
0.94
78.03

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Chemistry
Spontaneous change is one in there is:

Increase in free energy
An increase in Internal energy
A lowering of entropy
A lowering of free energy

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Chemistry
The gas dissolved in water that makes it basic is :

Ammonia
Hydrogen
Carbon dioxide
Sulphur dioxide

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Chemistry
The most malleable metal is

silver
platinum
iron
gold

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Chemistry
The most abundant element in the earth’s atmosphere is

Nitrogen
Krypton
Argon
Oxygen

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Chemistry
Synthetic detergents are prepared from

Glycerides
Potassium salts of higher fatty-acids
Sodium salts of higher fattyacids
Hydrocarbons of petroleum

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MORE MCQ ON Chemistry

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